3a thread class right-hand 0.370" thread length dished hexagon head style 0.490" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.120" grip length 7060 double pounds per square inch shear strength grit blast top of head, with color green on thread end. passivate surface treated unjf thread series